Ventilator



Oct. 20, 1925. 1,558,296

L. C. SCHAUB VENTILA'I'OR Filed Jan. 141 1925 /N VENTOR 1/54: 6160mm Patented Oct. 20, 1925.

UNITED STATES LISLE C. SCI-IA'UB, OF CHICAGO, ILLINOIS.

VENTILA'IOR.

Application filed January 1 1, 1925. Serial No. 2,350.

To all w/wm it may concern:

Be it known that l, LIsLn G. Sermon, a citizen of the United States, residing at Uhicago, in the county of Uook'and State of lllinois, have invented a new and useful improvement in a Ventilator, of which the following is a full, clear, and exact description, such as will enable others skilled in the art to make and use the same.

lily present invention relates to ventilators and more particularly to the type known as fenestrated or skylight ventilators for use on the roofs of factories, light-wells, or courts, and any other place where such a structure may be indicated.

in ventilators having the foregoing characteristics it is the practice to hinge or pivot the fenestha: at their upper edges to the ridge of the ventilator box or housing frame, and to raise and lower the respective sides or sashes according to prevailing weather conditions, so that the elements Wlll be prevented, to a large extent, from entering the opened portions of the structure. With this in mind 1 have designed a ventilator that may be opened upon either side, the operating mechanism being such that the windows or sashes may be lifted upon both sides successively or one side may be operated while the other side remains stationary.

The principal object of my invention resides in providing a structure that will per form the above-mentioned functions in a simple and dependable manner. Also it is an object to provide a ventilator and operating mechanism that is novel in constructure and is capable of easy manipulation. A further object is to provide a ventilator that is made from a minimum of parts so that it may be economically manufactured and placed upon the market for a moderate price.

I prefer to carry out my invention and, thereby, accomplish the above-mentioned objects in substantially the manner hereinafter i'ully described, and more particu larly pointed out in the appended claims, reference being now had to the accompanying drawings that form a part of this specification.

The drawing presents a transverse vertical section of a ventilator that is made in accordance with my invention, and shows the same installed upon the roof of a building.

In the drawing, 1 represents the usual upstanding wall surrounding the opening in the root to be covered and protected by the ventilator, which wall is provided with the usual flashing 2 to prevent leakage aroimd the edge thereof. Suitably mounted upon this wall are the ventilator trusses each of which consists of'a horizontal cross-beam 3 extending transversely of the opening in the roof, and secured to and arising from this cross-beam intermediate the ends thereof is an upright king post 4. The rafters 5 and (3 are secured at their upper ends to the upper portion of the post 4 and incline downwards and are secured to the opposite outer ends of the cross-beam 3. A triangular plate 7 is secured to the upper end of the post lwith its basal edge uppermost and the ridge-piece 8 is supported by the triangular plate '4" of the respective trusses with the hinge members 9 of a modified or distorted L-shape or lshape section depending from the longitudinal edge of said ridgepiece The oppositely disposed sashes 10 and 11 may be constructed in any suitable manner for strength and dependability and are preferably so madethat the usual glass plates may be readily mounted therein. Along the upper edges of the sashes are provided upwardly extending flanges 12 of inverted substantially L-shape or J-shape cross section so that the lateral'portions of said flanges will hook and pivotally coact with the lateral portions of flanges 9 that depend from the ,ridge-piece, so that said sashes may be operated with the fulcrum or hinge at their upper horizontal edges, as shown in the drawing.

The mechanism for operating the structure comprises levers 13 and 14: that are fulcrunied intermediate their ends upon pivots or spindles 15 mounted on the respective rafters 5 and 6 of the trusses, which spindles have toothed or ratchet wheels 16 and 17 secured to them to cooperate with gravity controlled pawls or dogs 18 and 19 are mounted upon the rafters adjacent their respective ratchet wheels. The fulcrums of the levers 18 and 14 are, preferably nearer their upper ends, so that the shorter portions of said levers project above the pivots or spindles 15, and are suitably connectedwith the side-pieces of the sashes, either directly, or, as shown in the drawing, by means of the respective links, 20 and 21, that have pivoted connections with said levers and said side-pieces of the sashes.

When the sash is closed, as at the left of the drawing, the links and levers will be folded almost flat with the rafters, but upon moving the lower end of the longer portion of the levers inwardly or towards the posts l the structure will unfold and raise the sash upon the hinge at its upper edge.

A cable or the like, 22, has one end secured to and wound upon a drum or wind lass 23, while its opposite end is secured to the lower end of the lever, 13, and the intermediate portion of said cable engages with a grooved pulley secured to the lower end of the lever M. The Windlass forms a portion of, or may be separate and secured to, a peripherally toothed wheel 25 carried upon a spindle 26 projecting latorally from the king post a, and a worm 27 engages with this toothed wheel is adapted to rotate the same so as to wind or unwind the cable, as will be understood. The axis of the spindle 28 for the worm is preferably horizontally disposed, and said spindle is pivoted upon its outer end with a small grooved pulley which is engaged with and actuated by an endless rope, cable, chain, or the like 30, that hangs down to within easy reach of the person manipulating the ventilator.

When the cable 22 begins to wind upon the Windlass 23 it exerts the greatest initial pull upon the pulley 2a and this has a tendency to operate the lever 14 and move it towards the post l. It is desirable, however, and frequently necessary, to keep the sash 11 closed and raise only the sash 10, and this may be accomplished by releasing the dog 18 from its ratchet wheel 16 and permitting the dog 19 to remain engaged with its ratchet wheel 17. To conveniently operate the dogs in this manner I have connected them by a light wire or cord 31, that is provided intermediate its ends with a small ring or eye 32 through which the Windlass actuating cable or chain 30 passes. By swinging the cable 30 to one side of the vertical, prior to operating it, the wire 31 will be drawn taut upon one side and will be loose or sag upon the other. In the drawing the cable 30 has been swung to the left which'has released the dog 19 and permits the right-hand sash 11 to be opened while the left-hand sash remain closed. On account of their peculiar formation or counterweight construction the dogs or pawls gravitate to and engage with the teeth of the respective ratchet wheels, and when it is desired to open both sashes simultaneous-ly the cable 30 is pulled straight down and swung away from the vertical at a right angle to wire 31 thereby drawing both sides of the wire taut and releasing both dogs at once which permits both sashes to be raised when the win'dlass is rotated to wind the cable 22.

nssaeoc I desire it understood that slight changes or modifications may be readily made without departing from the m-inninle of my invention, as for example a gear and pinion, or racl; and pinion or miter-gears may be substituted for the worm and worm wheel, and other forms of levers may be substituted for the lever and links. it will be understood that all such changes or modilications are fully contemplated as coming within the scope or my invention, as expressed in the appended claims.

il hat I claim as new is l. A ventilator comprising supporting trusses consisting of a cross-beam, a king post thereon, and rafters inclined from op posite ends of the cross-beam to the upper portion oi said post, closures hinge dly mounted upon said trusses, levers tulcrumed intermediate their ends on said rafters and operatively connected at their outer end with said closures, a windlass, a cable secured at one end to and adapted to be wound upon said Windlass and at its opposite end secured to the free end of one or said levers, said cable intermediate its ends having coaction with the free end of the other lever, pawl and ratchet devices for each lever, means for operating said Windlass, and means connecting said pawl and ratchet device and engaged with said Windlass operating means whereby to actuate the respective pawls.

2. A ventilator comprising suitable supports, closures hingedly mounted thereon, levers iulcrumed intermediate their ends on said supports and operatively connected at their outer ends with said closures, a windlass, a cable secured at one end to and adapted to be wound upon said Windlass and at its opposite end secured to the free end of one of said levers, said cable intermediate its ends having coacti'on with the free end of the other lever, pawl and ratchet devices for each lever, means for operating said windlass, and means connecting said pawl and ratchet devices and engaged with said Windlass operating means whereby to actuate the respective pawls.

3. it ventilator comprising suitable supports, ventilator closures hinged at their upper end on said supports, levers for raising the lower end of said closures and pivoted intermediate their ends, a cable attached to the lower portions of said levers one end of which cable is wound upon a drum, said drum, a gear connected therewith means for operating said gear, a horizontal wire, a vertically disposed cable ensaid wire, and means secured to the ends of said wire that hold said lever in adjusted positions.

l. A ventilator comprising suitable supports, ventilator closures hinged at their upper end on said supports, levers for raising the lower end of said closures and pivoted intermediate their ends, a cable attached to the lower portions of said levers one end of which cable is wound upon a drum, said drum, a gear connected therewith, a Worm engaging said gear, a pulley for operating said worm, a horizontal wire, a vertically disposed cable engaging said wire, one end of which cable is Wound upon said pulley and means secured to the ends of said wire that hold said levers in adjusted positions.

5. A ventilator comprising suitable supports, ventilator closures hinged at their upper end on said supports, levers for raising the lower ends of said closures and pivoted intermediate their ends, a cable attached to the lower portions of said levers one end of which cable is Wound upon a drum, said drum, a gear connected therewith, means for operating said gear, a horizontal wire, a vertically disposed cable engaging said wire, and pawl and ratchet devices connected with said levers the pawls of which are connected to the respective ends of said wire whereby the same may be released by a lateral swing of said vertical cable, and means secured to the ends of said wire that hold said levers in adjusted positions.

Signed at Chicago, in the county of Cook and State of Illinois this 8th day of J anuary 1925. v r

LISLE c. SOHAUB. 

